Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7cfceba0b297718…

MALICIOUS

PDF

45.4 KB Created: 2020-07-27 17:29:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4eed9d17f60af1dca24c41e4f74d49a8 SHA-1: 6c5a1a15c48b7057d1b3ec776b87ae8f68ec39c5 SHA-256: f7cfceba0b297718b5f931c1ac099d1829b33133c8400a08f6623997e25ce6de
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external resources, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is used to obscure the final destination. The document body, though heavily obfuscated, contains references to 'Barefoot investor pdf 2018', suggesting a lure to attract users interested in financial information.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=barefoot+investor+pdf++2018
    • http://files.arizonalapidarymaterials.com/uploads/1/3/1/8/131856125/2245120.pdf
    • http://files.mrmacbible.org/uploads/1/3/0/7/130739601/vexerivivitexiz_rosexuma_gasedogubepo_somovotonag.pdf
    • http://files.eastpennardchurch.org/uploads/1/3/0/7/130739971/79e5d00157554b.pdf
    • http://files.realityism.com/uploads/1/3/0/8/130873728/xegobopafigom-purilij.pdf
    • http://files.realityism.com/uploads/1/3/0/8/130873728/xe
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2950/3908/files/68049019131.pdf
    • https://cdn.shopify.com/s/files/1/0432/1198/0964/files/musedew.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5624/files/suxolurojalevu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/96524925935.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/mowesanepukebudawuniror.pdf
    • https://cdn.shopify.com/s/files/1/0429/6900/6236/files/gexelosafogisozutezupof.pdf
    • https://cdn.shopify.com/s/files/1/0440/8901/6472/files/vomuwalapad.pdf
    • https://cdn.shopify.com/s/files/1/0428/0867/2423/files/53222407977.pdf
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/masobaneliwipozin.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/96372878911.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007339.bin
edcd9e7c8b0c638f3c780efb2d81bd6902056105a7dd776e95bd807499688fb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7339 5420 bytes
font_01_sfnt_off000085b6.bin
1f86a31a57b5059cec7ff65ba8a055a59cab8d360bff09ef25a62d5fccb65d36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85B6 10220 bytes

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